期刊
SCIENCE
卷 305, 期 5691, 页码 1747-1752出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1100612
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资金
- NCRR NIH HHS [S10 RR019409-01] Funding Source: Medline
- NIGMS NIH HHS [R01-GM62942A] Funding Source: Medline
The events that occur during the fusion of double-membraned mitochondria are unknown. As an essential step toward determining the mechanism of mitochondria) fusion, we have captured this event in vitro. Mitochondrial outer and inner membrane fusion events were separable and mechanistically distinct, but both required guanosine 5'-triphosphate hydrolysis. Homotypic trans interactions of the ancient outer transmembrane guanosine triphosphatase, Fzo1, were required to promote the fusion of mitochondrial outer membranes, whereas electrical potential was also required for fusion of inner membranes. Our conclusions provide fundamental insights into the molecular events driving mitochondrial fusion and advance our understanding of the evolution of mitochondria) fusion in eukaryotic cells.
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